scholarly journals Potential of white-rot fungi for bioremediation

2017 ◽  
Vol 4 (7) ◽  
pp. 229-232 ◽  
Author(s):  
Ronivaldo Rodrigues da Silva
Keyword(s):  
Waste Treatment ◽  
White Rot Fungi ◽  
White Rot ◽  
Toxic Substances ◽  
Chemical Methods ◽  
Fungal Enzymes ◽  
Mild Conditions ◽  
Environmental Friendly ◽  
Physico Chemical ◽  
By Products

Environmental applications of enzymes in biodegradation for preventing pollution by toxic byproducts warrants approaches that can be performed under mild conditions, are economically feasible and can replace the use of chemicals. Technologies involving physico-chemical methods, like incineration, dechlorination and UV oxidation, for waste treatment are not acceptable since they generate a lot of pollutants as by-products. To address these problems, environmental–friendly alternatives are required for bioremediation. In this context, fungal enzymes have emerged as a natural tool to detoxification of pollutants in environment, and the potential to convert toxic substances to less hazardous or non-hazardous forms. However, what are the effective advances by using white-rot fungi for bioremediation? Here, a brief discussion about the application of these fungi to detoxification of pollutants in environment has been considered.

scholarly journals Biodegradation Of Iron Industry And Gold Industrial Wastewater By White Rot Fungi – Calocybe Indica & Agaricus Bisporus Comparative Study

2021 ◽  
Vol 23 (12) ◽  
pp. 431-441
Author(s):  
Mahesha V ◽  
◽  
Dr. Chitra P ◽  
R. Ragunathan ◽  
◽  
...  
Keyword(s):  
Industrial Wastewater ◽  
Waste Treatment ◽  
White Rot Fungi ◽  
Cost Effective ◽  
Industrial Wastes ◽  
White Rot ◽  
Toxic Substances ◽  
Treatment Processes ◽  
Cost Effective Approach ◽  
Calocybe Indica

Increasing discharge and improper management of liquid and solid industrial wastes have created a great concern among industrialists and the scientific community over their economic treatment and safe disposal. Hence, there is a growing need for the development of novel, efficient, eco-friendly, and cost-effective approach for the remediation for these industries released into the environment and to safeguard the ecosystem. In this regard, recent advances in wastewater of heavy metal have propelled bioremediation as a prospective alternative to conventional techniques. Heavy metals are toxic and dangerous to the ecosystem. White rot fungi (WRF) are versatile and robust organisms having enormous potential for oxidative bioremediation of a variety of toxic chemical pollutants due to high tolerance to toxic substances in the environment. The decolorization and detoxification potential of WRF can be harnessed thanks to emerging knowledge of the physiology of these organisms as well as of the bio catalysis and stability characteristics of their enzymes. This knowledge will need to be transformed into reliable and robust waste treatment processes.

scholarly journals Research on the changes of physiological characteristics of algal cells in the process of algae dissolving by immobilized white rot fungi

2020 ◽  
Vol 165 ◽  
pp. 05033
Author(s):  
Guoming Zeng ◽  
Jing Luo ◽  
Xiaowan Liu ◽  
Maolan Zhang ◽  
Hengjun Tang
Keyword(s):  
Low Cost ◽  
White Rot Fungi ◽  
Physical Method ◽  
White Rot ◽  
Ecological Security ◽  
Algal Control ◽  
The Cost ◽  
Water Eutrophication ◽  
By Products ◽  
Control Water

With the increasing of water pollution, water eutrophication is seriously affecting people’s daily life and production. Therefore, it is particularly important to explore safe and efficient algae control technology. In the current algal bloom treatment methods, the physical method is not complete in algae dissolving, and the cost of algal control is high. The chemical method is easy to produce secondary pollution and toxic by-products, and the safety is not high. However, the biological method has the advantages of low cost, high ecological security and good ecological compatibility. It is considered to be a more promising method to remove algae and biological toxins, and it is also an inevitable trend to control water eutrophication in the future.

scholarly journals Pemanfaatan sistem rotary biological contactor menggunakan kultur Omphalina sp yang diimobilisasi pada tandan kosong kelapa sawit untuk absorbsi logam berat Cu2+ dan Hg2+ (Utilization of rotary biological contactor system using Omphalina sp immobilized on oil palm empty fruit bunch for absorption of heavy metals Cu2+ and Hg2+)

2017 ◽  
Vol 85 (2) ◽  
Author(s):  
Firda DIMAWARNITA ◽  
Tri PANJI
Keyword(s):  
Heavy Metals ◽  
Waste Treatment ◽  
Negative Impact ◽  
Enhanced Recovery ◽  
White Rot Fungi ◽  
Environmentally Friendly ◽  
Absorption Spectrometry ◽  
Treatment Method ◽  
White Rot ◽  
Empty Fruit Bunches

Heavy metals such as lead, chromium, cadmium, copper, mercury, and arsenic which are industrial by-products can have negative impact on the environment if they not managed properly. Biosorption is environmentally-friendly waste treatment method. The advantage of biosorption compared to other waste treatment method is ecotechnology, which means effective, cheaper than chemical treatment and environmentally-friendly technology. Using the concept of bioremediation-based on microbial enhanced recovery of metals (MERM) allows the possibility of concentration process (bio-concentration) of metal content through the process of biosorption in microbial cells. The process of bio-concentration potentially to be applied on a commercial scale to increase the recovery of high-value commercial metals. This study aims to absorb Cu2 + and Hg2 + metals using Omphalina sp. cultured on empty fruit bunches (EFB) in rotary biological contactor (RBC) systems. The principle of this technique is waste containing metals was contacted with white rot fungi (WRF) Omphalina sp. which is attached to the surface of the media inside a reactor and then the final waste concentration was analyzed. This analysis was using atomic absorption spectrometry (AAS) device to measure the concentration of Cu2+ and Hg2+ metal ions and Freundlich isothermic equations for calculating maximum absorption power (q max). The highest absorption of Cu2+ ion is 0.3304 mg/g and Hg2+ is 0.074 mg/g for 6 hours. The adsorption capacity of Omphalina sp. for Cu2 + and Hg2 + solutions based on the Freundlich adsorption equation with maximum adsorption power for Cu2 + is 71.911 mg/g and Hg2+ is 20.216 mg/g. Biosorbent Omphalina sp. can be reused in biosorption process with percentage decrease of Cu2+ is4.30% (4.3 ppm) and Hg2 + is 27.80% (1.39 ppm) for 18 hours.[Key words : biosorption technique, empty fruit bunches, immobilization, rotary biological contactor , white rot fungi-Omphalina sp.] AbstrakLogam berat seperti timbal, krom, cadmium, tembaga, merkuri, dan arsen yang merupakan hasil samping industri dapat berdampak negatif terhadap lingkungan jika tidak dikelola dengan baik. Biosorpsi merupakan metode pengolahan limbah yang ramah lingkungan.  Keunggulan biosorpsi dibandingkan dengan metode pengolahan limbah yang lainnya adalah ekoteknologi yaitu teknologi efektif, murah dan ramah lingkungan. Melalui konsep bioremediasi berbasis microbial enhanced recovery of metals (MERM) memungkinkan terjadinya proses pemekatan (bio-konsentrasi) kandungan logam melalui proses biosorpsi dalam sel mikroba. Proses bio-konsentrasi tersebut berpeluang untuk diterapkan dalam skala komersial untuk meningkatkan recovery logam bernilai komersial tinggi. Penelitian ini bertujuan untuk meng-absorpsi logam Cu2+ dan Hg2+ menggunakan kultur Omphalina sp. pada media TKKS dalam sistem rotary biological contactor (RBC). Prinsip teknik ini yaitu limbah yang mengandung logam dikontakkan dengan kultur JPP Omphalina sp. yang melekat pada permukaan media di dalam suatu reaktor kemudian konsentrasi limbah akhir dianalisis kandungannya. Analisis ini mengguna-kan alat spektrometri serapan atom (SSA) untuk mengukur konsentrasiion logam Cu2+ dan Hg2+ dan persamaan isoterm Freundlich untuk menghitung daya absorbsi maksimum (q max). Penyerapan tertinggi ion Cu2+ sebesar 0,330 mg/g dan Hg2+ sebesar 0,074 mg/g selama 6 jam. Kapasitas adsorpsi Omphalina sp. terhadap larutan Cu2+ dan Hg2+ berdasarkan persamaan adsorpsi Freundlich dengan daya adsorpsi maksimumnya untuk Cu2+sebesar 71,911 mg/g dan untuk Hg2+ sebesar 20,216 mg/g. Biosorben Omphalina sp. dapat digunakan ulang dalam proses biosorpsi dengan persentase penurunan Cu2+ sebesar 4,30% (4,3 ppm) dan Hg2+ sebesar 27,80% (1,39 ppm) dalam waktu 18 jam.[Kata kunci : imobilisasi, jamur pelapuk putih Omphalina sp, rotary biological contactor, teknik biosorpsi logam, tandan kosong kelapa sawit.]

scholarly journals PENGARUH PERLAKUAN PENDAHULUAN DENGAN KULTUR CAMPURAN JAMUR PELAPUK PUTIH Phanerochaete crysosporium, Pleurotus ostreatus DAN Trametes versicolor TERHADAP KADAR LIGNIN DAN SELULOSA BAGAS

2016 ◽  
Vol 1 (02) ◽  
Author(s):  
Sita Heris Anita ◽  
Euis Hermiati ◽  
Raden Permana Budi Laksana
Keyword(s):  
Lignocellulosic Biomass ◽  
Pleurotus Ostreatus ◽  
Trametes Versicolor ◽  
Lignin Degradation ◽  
White Rot Fungi ◽  
White Rot ◽  
Cellulose Content ◽  
Biological Pretreatment ◽  
Physico Chemical ◽  
Before And After

Conversion of lignocellulosic biomass requires pretreatment in order to separate lignin from cellulose. Several methods have been introduced for pretreatment process of lignocellulosic biomass. These are physical, physico-chemical, chemical, as well as biological pretreatment. The following investigation aimed at a biological pretreatment of bagasse using mix-culture of white-rot fungi with the objective to investigate pretreatment effect on the lignin degradation of bagasse with minimum loss of cellulose content. The white-rot fungi involved Phanerochaete crysosporium (Pc), Pleurotus ostreatus (Po), and Trametes versicolor (Tv) on degrading lignin of bagasse with minimal losses of cellulose content 5% (w/v). The culture variation are as follows Po dan Tv (1:1), Po dan Pc (1:1), Pc dan Tv (1:1) and Po, Pc dan Tv (1:1:1) they were inoculated into steamed bagasse and incubated for 1, 2, 3, and 4 weeks respectively. Chemical analysis was done to determine the weight loss, lignin, and alphacellulose content before and after pretreatment. Optimum lignin degradation was achieved after two weeks incubation for each mix-culture. The most effective lignin degradation of mix-culture Po, Pc and Tv (25,26±1,57%) with minimum cellulose loss (17,27±3,76%).Key words : pretreatment, white-rot fungi, mix-culture, baggaseINTISARIKonversi biomassa lignoselulosa membutuhkan proses perlakuan pendahuluan yang bertujuan untuk memisahkan lignin dari selulosa. Beberapa metode telah banyak diketahui untuk proses perlakuan pendahuluan biomassa lignoselulosa, diantaranya perlakuan pendahuluan secara fisika, fisika-kimia, kimia dan biologi. Penelitian ini bertujuan untuk mengetahui pengaruh penggunaan kultur campur jamur pelapuk putih Phanerochaete crysosporium (Pc), Pleurotus ostreatus (Po), dan Trametes versicolor (Tv) terhadap penurunan kadar lignin bagas dengan kehilangan minimal α-selulosa. Inokulum yang digunakan sebesar 5% (w/v) dengan variasi kultur Po dan Tv (1:1), Po dan Pc (1:1), Pc dan Tv (1:1) dan Po, Pc dan Tv (1:1:1). Kultur campur jamur diinokulasikan ke dalam bagas dan diinkubasi masing-masing selama 1, 2, 3, dan 4 minggu. Analisa kimia dilakukan untuk mengetahui kehilangan berat, kadar lignin serta selulosa bagas sebelum dan setelah perlakuan pendahuluan. Hasil penelitian menunjukkan bahwa penurunan optimal kadar lignin bagas dengan kehilangan minimal α-selulosa terjadi pada waktu inkubasi dua minggu untuk setiap variasi kultur campur. Dari empat variasi kultur campur pada waktu inkubasi dua minggu menunjukkan bahwa kehilangan rata-rata lignin bagas tertinggi (325,26±1,57%) dengan kehilangan minimal α-selulosa (17,27±3,76%) terjadi pada kultur campur Pc dan Tv.Kata kunci : perlakuan pendahuluan, jamur pelapuk putih, kultur campur, bagas  

scholarly journals Removal of phenols-like substances in pharmaceutical wastewater with fungal bioreactors by adding Trametes versicolor

2018 ◽  
Vol 78 (4) ◽  
pp. 743-750 ◽  
Author(s):  
M. Bernats ◽  
T. Juhna
Keyword(s):  
Continuous Flow ◽  
Trametes Versicolor ◽  
White Rot Fungi ◽  
High Strength ◽  
Continuous Treatment ◽  
White Rot ◽  
Flow Mode ◽  
Pharmaceutical Wastewater ◽  
Batch Mode ◽  
Fungal Enzymes

Abstract Fungi are known to be more resistant to toxic compounds and more effective in removing recalcitrant organics such as phenols than bacteria. Here we examined the removal of phenols (as a component of Zopliclone drugs), added to non-sterile pharmaceutical wastewater with continuous treatment fungal bioreactor by its augmentation with mono-species of white-rot fungi (WRF) Trametes versicolor. Results showed that WRF in a sterile reactor (a batch mode) were moderately effective for removal of phenols (40% in seven days); however, native wastewater microbes at optimal conditions for fungi (pH 5.5, 25 °C) were more effective (90%, both in batch and continuous flow modes). In continuous flow mode, addition of WRF was an effective way to mitigate high loads of phenols (up to 400 mg/L), by both fungal enzymes (growth rate 0.075 h−1, laccase enzymatic activity 4 nkat/mL) and biosorption. The study confirmed that naturaly occuring fungi in combination with fungus-augmentation is an effective approach for treatment of high-strength pharmaceutical wastewater.

Using fluorogenic probes for the investigation of selective biomass degradation by fungi

2015 ◽  
Vol 17 (3) ◽  
pp. 1918-1925 ◽  
Author(s):  
Qian Zhang ◽  
Xinrui Peng ◽  
Michelle Grilley ◽  
Jon Y. Takemoto ◽  
Cheng-Wei Tom Chang
Keyword(s):  
White Rot Fungi ◽  
White Rot ◽  
Green Process ◽  
Biomass Degradation ◽  
Fungal Enzymes ◽  
Crude Extracts ◽  
High Preference ◽  
Fluorogenic Probes

A library of fifteen fluorogenic probes mimicking the linkages in celluloses, hemicelluloses and lignin were screened against crude extracts of white-rot fungi. The fungal enzymes display a high preference for cleaving probes which mimic hemicelluloses. This finding may enable the development of green process for isolating and utilizing hemicelluloses from biomass.

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